Sorry if this has been addressed earlier in the thread, I didn't see it but I might have missed it.
Currently I'm on CFW 6.20 PRO-B8 via your other guide (which was brilliant) on a 2001. I have Final Fantasy IV The Complete Collection on UMD. The whole purpose of doing this hack was so I could rip this UMD into an .ISO and then run it directly from my memory card. According to this topic, it should be possible. The issue I'm having is when I go into the VSH menu and change USB Mode to UMD Disc and connect it to my PC, the PSP screen changes to 'No media is installed' or something to that effect and no new drive appears on my computer.
I know I'm missing something as everything up to this point has worked flawlessly. Even if I keep the USB Device set to Memory Stick, the computer still doesn't show anything. I'm not sure if this is a PSP issue or something with my computer.
Thanks for any input or suggestions!